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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>16注释标签和特殊字符</title>
</head>
<body>
    <!-- 我想喝咖啡 -->
     讲&nbsp;&nbsp;&nbsp;&nbsp;究
     <hr>
     <!-- <p>标签 -->
    &lt;p&gt;标签
</body>
</html>